#include <bits/stdc++.h>
using namespace std;
using ch = char;
using ll = long long;
using ld = long double;
using db = double;
using st = string;
using vdb = vector<db>;
using vvdb = vector<vdb>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vd = vector<ld>;
using vvd = vector<vd>;
using vs = vector<st>;
using vvs = vector<vs>;
using vc = vector<ch>;
using vvc = vector<vc>;
using vb = vector<bool>;
using vvb = vector<vb>;
const ll mod1 = 998244353;
const ll mod2 = 1000000007;

int main(){
  ll A,B,C;
  cin>>A>>B>>C;
  if(A>B||A>C){
    cout<<"No"<<endl;
    return 0;
  }
  cout<<"Yes"<<endl;
}